Meaning

1 senses
  1. (not comparable, slang, vulgar)In a state of sheer terror.

    Tell the truth: you were as shitlessly scared as us.

Origin

From shitless + -ly, from scared shitless.

From shitless + -ly, from scared shitless.

Wiktionary, CC BY-SA 4.0 · source

See also

neighbours in the dictionary
shitlessly — meaning, examples, forms, synonyms | Krumeto